1201006669 has 2 divisors, whose sum is σ = 1201006670. Its totient is φ = 1201006668.

The previous prime is 1201006649. The next prime is 1201006679. The reversal of 1201006669 is 9666001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854860644 + 346146025 = 29238^2 + 18605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201006669 - 2¹⁵ = 1200973901 is a prime.

It is a super-2 number, since 2×1201006669² = 2884834037964951122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201006669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201006649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600503334 + 600503335.

It is an arithmetic number, because the mean of its divisors is an integer number (600503335).

Almost surely, 2^1201006669 is an apocalyptic number.

It is an amenable number.

1201006669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201006669 is an equidigital number, since it uses as much as digits as its factorization.

1201006669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1201006669 is about 34655.5431208342. The cubic root of 1201006669 is about 1062.9556376396.

The spelling of 1201006669 in words is "one billion, two hundred one million, six thousand, six hundred sixty-nine".